Debt - Narrative (Details)				3 Months Ended
	Jun. 28, 2024 USD ($)	Jun. 27, 2024	Oct. 31, 2021 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Outstanding under subordinated note				$ 101,000,000	$ 106,000,000
Via Renewables | W. Keith Maxwell III
Debt Instrument [Line Items]
Ownership percentage (in percent)				51.00%
Subordinated Debt | Amended And Restated Subordinated Promissory Note
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)			2.00%
Face amount			$ 25,000,000
Minimum availability under the borrowing base			5,000,000.0
Outstanding under subordinated note				$ 0	0
Subordinated Debt | Minimum | Amended And Restated Subordinated Promissory Note
Debt Instrument [Line Items]
Subordinated debt, advances			1,000,000
Subordinated Debt | Maximum | Amended And Restated Subordinated Promissory Note
Debt Instrument [Line Items]
Subordinated debt, advances			$ 25,000,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Capitalized financing costs				1,500,000	1,700,000
Capitalized financing costs, other current				700,000	700,000
Capitalized financing costs, other non-current				800,000	$ 1,000,000.0
Subordinated debt—affiliate	$ 205,000,000
Deferred debt issuance cost, writeoff				$ 100,000
Interest rate, stated percentage (in percent)				4.00%
Nonutilization fee, percent				0.50%
Fixed charge coverage ratio				1.59
Leverage ratio				3.00
Debt default, material judgment (in excess of)				$ 5,000,000
Revolving Credit Facility | Line of Credit | Minimum
Debt Instrument [Line Items]
Fixed charge coverage ratio				1.10
Revolving Credit Facility | Line of Credit | Maximum
Debt Instrument [Line Items]
Leverage ratio	3.00	2.50		1.58
Revolving Credit Facility | Line of Credit | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)				1.00%
Revolving Credit Facility | Line of Credit | SOFR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)				3.25%
Revolving Credit Facility | Line of Credit | SOFR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)				4.50%
Revolving Credit Facility | Line of Credit | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)				2.25%
Revolving Credit Facility | Line of Credit | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)				3.50%
Revolving Credit Facility | Line of Credit | Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate (in percent)				0.50%